B00B7Driver Seat Occupant Position Sensor A
- Generic OBD-II code · Body
- How the car detects it
- B00B7 is the first of five occupant position sensors for the driver seat. No carmaker publishes the code, and J2012 does not say which sensor the letter A means. Position sensing serves the DASS route of FMVSS 208, which also exists for the driver: the driver bag must already be suppressed when a test dummy's head, neck or chest moves into a zone next to the cover that the maker defines. Ultrasound is one way to watch that zone; an Automotive Systems Laboratory patent crosses beams from transmitters in the headliner about eight inches in front of the airbag door, asks for an update within 10 ms and treats any undiagnosed fault as a reason to disable the bag. A stored B00B7 therefore means the module has lost this view and the airbag lamp is on.
- What you may notice
- Airbag warning lamp on
- Out-of-position suppression of the driver airbag unavailable
- Safety note: airbag system; disconnect sensor and seat plugs only de-energised (ignition off, battery off, wait time); calibrate/initialise position sensors after replacement, specialist workshop only
- Likely causes
- LikelyOpen or poor contact in the lead to position sensor A (e.g. headliner or trim harness)
- PossibleSensor face covered, dirty or misaligned after trim work
- RareInternal fault of position sensor A
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €80 – €800
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.